Communication Systems, by nature, is largely an abstract area of study. In this text, the authors have intrinsically intertwined theory and pedagogy with the concepts. This isespecially done to immensely enhance visualization of this subject and its mathematicalidentities. Adequate topical enhancements according to current curriculum requirements,crisp descriptions, and numerous illustrations make this book is a very interestingread. In addition, thoroughly refreshed pedagogical aids are provided as usefullearning tools for all students.